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Old 11-21-2011, 11:30 AM
"J. Bakshi"
 
Default need good way to create screencast

On Mon, 21 Nov 2011 11:43:53 +0000
Alan Pope <alan@canonical.com> wrote:

> On 21/11/11 11:37, J. Bakshi wrote:
> >
> > If you achieve the same , then please share with the list.
> >
>
> I did about an hour ago.
>
> https://lists.ubuntu.com/archives/ubuntu-users/2011-November/254419.html
>
> Al.
>
Good work... Interesting.
Can I use it on debian box ?
I have debin multimedia repo added here so get latest ffmpeg.

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Old 11-21-2011, 11:31 AM
Alan Pope
 
Default need good way to create screencast

On 21/11/11 12:30, J. Bakshi wrote:

Good work... Interesting.
Can I use it on debian box ?
I have debin multimedia repo added here so get latest ffmpeg.



Dunno, try it

Cheers,
Al.

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Old 11-21-2011, 02:24 PM
"A. Jorge Garcia"
 
Default need good way to create screencast

From: J. Bakshi <bakshi12@gmail.com>
To: alan <alan@canonical.com>; Ubuntu user technical support, not for
general discussions <ubuntu-users@lists.ubuntu.com>

Sent: Mon, Nov 21, 2011 6:37 am
Subject: Re: need good way to create screencast

On Mon, 21 Nov 2011 11:29:45 +0000
Alan Pope <alan@canonical.com> wrote:


On 21/11/11 10:39, J. Bakshi wrote:
>
> Have you tried Kazam ?
>
>

http://whyareyoureadingthisurl.wordpress.com/2010/09/05/kazam-0-1-released/

>

I have, and development seems to have paused. It also doesn't do what

I

wanted which was record audio from the sound card and audio from the
microphone at the same time.

Cheers,
Al.



Like I said, just install the jre plugin for Firefox.

Take a look a step 10 on this blog post,
http://shadowfaxrant.blogspot.com/2011/09/cistheta-2011-2012-kiss-natty-64.html


I write stuff like this on my blog as a note to self so I can't forget
what I figured out already!


HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009



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Old 11-21-2011, 07:58 PM
Jason Paul Joines
 
Default need good way to create screencast

-------- Original Message --------
Subject: Re: need good way to create screencast
From: A. Jorge Garcia <calcpage@aol.com>
To: ubuntu-users@lists.ubuntu.com
Date: 2011.11.20.Sun.21:00:13

From: Jason Paul Joines <jason@joines.org>
To: Ubuntu Users <ubuntu-users@lists.ubuntu.com>
Sent: Sun, Nov 20, 2011 8:52 pm
Subject: Re: need good way to create screencast

-------- Original Message --------
Subject: Re: need good way to create screencast
From: Amedee Van Gasse <amedee-ubuntu@amedee.be>
To: ubuntu-users@lists.ubuntu.com
Date: 2011.11.20.Sun.17:12:54

On Mon, November 21, 2011 00:01, Jason Paul Joines wrote:

I'm running Kubuntu 11.04 on Lenovo ThinkPad T510 and trying to
make a video with audio of a LibreOffice Impress presentation I'm

giving.


I've tried using istanbul, gtk-recordmydesktop, recorditnow,

and

recordmydesktop. In each case the video and audio get out of sync.
I've tried every combination of settings I could find via Google in

any

forum post, YouTube video, bug report, etc., but nothing works.

The latest thing I've tried was to use the script posted in

the bug

report at
https://bugs.launchpad.net/ubuntu/+source/recordmydesktop/+bug/339648
which records audio and video separately and then recombines them.

Just
in case anyone else tries that script, recordSoundAndDesktop.sh, I

had

to replace the single dashes in the recordmydesktop line with double
dashes as in --fps and --v_quality. The result was a video that was
still out of sync with the audio but also ran way too fast.

My sound hardware via hwinfo is:
20: PCI 1b.0: 0403 Audio device
[Created at pci.318]
Unique ID: u1Nb.WiEkMfkoYv9
SysFS ID: /devices/pci0000:00/0000:00:1b.0
SysFS BusID: 0000:00:1b.0
Hardware Class: sound
Model: "Intel Ibex Peak High Definition Audio"
Vendor: pci 0x8086 "Intel Corporation"
Device: pci 0x3b56 "Ibex Peak High Definition Audio"
SubVendor: pci 0x17aa "Lenovo"
SubDevice: pci 0x215e
Revision: 0x06
Driver: "HDA Intel"
Driver Modules: "snd_hda_intel"
Memory Range: 0xf2620000-0xf2623fff (rw,non-prefetchable)
IRQ: 41 (25351 events)
Module Alias:

"pci:v00008086d00003B56sv000017AAsd0000215Ebc04sc0 3i00"

Driver Info #0:
Driver Status: snd_hda_intel is active
Driver Activation Cmd: "modprobe snd_hda_intel"
Config Status: cfg=new, avail=yes, need=no, active=unknown


Any ideas?
recordmydesktop should just work, so my idea would be to file a bug

report

at https://bugs.launchpad.net/ubuntu/+source/recordmydesktop/+bug/
First check if there is already a similar bug, but I suppose that you

have

already done that.







I had already added my information to the existing bug report.
That bug report is over two and a half years old so it seems unlikely

to

be fixed.



I had a hard time with recordmydesktop.

I would recommend http://screencast-o-matic.com which I have used for
quite some time without a hitch!


HTH,
A. Jorge Garcia
Applied Math and CompSci
http://shadowfaxrant.blogspot.com
http://www.youtube.com/calcpage2009






Screencast-o-matic.com definitely works better than anything else
I've tried so far. It doesn't seem to do full screen though. The
controls take up a lot of room at the bottom so when you size the
recording area it leaves the taskbar area and controls area unselected.
I need to record a full screen presentation so it then cuts that much
off the bottom of my LibreOffice Impress presentation. Also, the free
version only does 15 minutes and I need to record about an hour. Still,
it's probably worth the $12 for one year price since it's the only thing
working really at all so far.



Jason
===========

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Old 11-21-2011, 08:01 PM
Jason Paul Joines
 
Default need good way to create screencast

-------- Original Message --------
Subject: Re: need good way to create screencast
From: J. Bakshi <bakshi12@gmail.com>
To: ubuntu-users@lists.ubuntu.com
Date: 2011.11.21.Mon.4:39:15

Have you tried Kazam ?

http://whyareyoureadingthisurl.wordpress.com/2010/09/05/kazam-0-1-released/


[...]

On Mon, 21 Nov 2011 10:21:22 +0000
Alan Pope<alan@canonical.com> wrote:


On 20/11/11 23:01, Jason Paul Joines wrote:

I've tried using istanbul, gtk-recordmydesktop, recorditnow, and
recordmydesktop. In each case the video and audio get out of sync. I've
tried every combination of settings I could find via Google in any forum
post, YouTube video, bug report, etc., but nothing works.


[...]






I just tried kazam. There isn't a version for 11.04 so I installed
the closest versions of the dependencies manually, then forced the
dependencies to install kazam. After that, it didn't record any sound.
There doesn't appear to be any documentation so I can't even tell if
it's supposed to be able to record via microphone input or not.



Jason
===========

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Old 11-21-2011, 08:20 PM
Jason Paul Joines
 
Default need good way to create screencast

-------- Original Message --------
Subject: Re: need good way to create screencast
From: Alan Pope <alan@canonical.com>
To: ubuntu-users@lists.ubuntu.com
Date: 2011.11.21.Mon.4:21:22

On 20/11/11 23:01, Jason Paul Joines wrote:

I've tried using istanbul, gtk-recordmydesktop, recorditnow, and
recordmydesktop. In each case the video and audio get out of sync. I've
tried every combination of settings I could find via Google in any forum
post, YouTube video, bug report, etc., but nothing works.



I've tried pretty much every tool there is to record the Linux
desktop. They all suck in one way or another, all of them. So I looked
around and cobbled together bits and bobs to make reliable, high
quality screencasts.


I compiled ffmpeg with support for nasty non-free codecs and wrote a
little script which uses ffmpeg, sox and parec to record the screen,
the sound from a microphone and the sound from the computer. It
smooshes them together in a .mkv file into something you can a) edit,
b) publish, _easily_.


It creates beautiful lossless videos even at quite high resolutions
(1920x1080 [1080p] for example) and doesn't place a massive load on
the system whilst doing it. It's way more reliable than
RecordMyDesktop and because I used a fixed set of debs, I know it
works without having to depend too much on the moving target of the
Ubuntu repos.


It works best on Intel based video cards or on nVidia cards running
nouveau (not the binary nVidia one). There's significant graphical
corruption on nVidia binary because (I believe that) the capture stuff
can't get in between X and the video card, so don't capture all screen
deltas (or something). So you end up with chunks of the screen not
updating, especially in high-speed movement like switching desktops or
windows appearing/disappearing. I haven't tested ATI/AMD cards at all.


Here's a couple of examples which I recorded and uploaded to youtube
with no editing or post processing.


http://www.youtube.com/watch?v=e6MQrCmc6HY
http://www.youtube.com/watch?v=BUlyqeYMPxs

They're both 1080p, recorded on my Core i7 desktop, however lower spec
machines should be able to record fine too. 720p is a nice resolution
to record at, because it's still "HD" but not so big as to need a
giant screen or video acceleration just to play it. However if you're
gonna stick them on youtube who cares? They do the re-encoding for
you, you just chuck up the highest resolution you can.


The process would be more complex than just "record and upload" for
you if you want to cut it up and add in transitions and slides between
one step and the next.


SETUP
~~~~~

I tend to setup a clean install (or at the very least a clean new user
ID) in which I record the videos (not those two above because they
were just showing off a bug). I believe people like tutorials to show
off what they are most likely to see, the default desktop.


I then install the ffmpeg debs which I put here:-

* TODO: make a PPA of these

http://popey.com/~alan/screencasting/debs/

Then grab the ffmpeg screencasting script:-

* TODO: put this in bzr or something? (will people contribute?)

http://popey.com/~alan/screencasting/scripts/ffscreencast.sh

Put that somewhere and make it executable (like /usr/local/bin/)

Open pulse audio mixer and ensure whatever microphone is working
(assuming you want to record audio).


RECORDING
~~~~~~~~~

I like not having to edit, which means I don't like having to cut the
start and end of a video where you see the person start and stop the
recording app/script.


So I ssh into the machine doing the recording and run
"ffscreencast.sh" via ssh. As soon as the script starts it's recording
(give or take half a second). It tries to figure out your screen
resolution from xrandr and sets that as the recording size (i.e. it
will record full screen only).


Once it's running, do your stuff and then press "q" in the ssh session
to stop it.


By default the videos get put in ~/Videos/YYYY/MM/DD/ and will be
called HHMMSS-final.mkv. There will also be a
~/Videos/YYYY/MM/DD/archive which contains the master video and audio
before they get smooshed together by the script.


You should be able to play the mkv video in totem, or upload to
youtube, or edit in pitivi, openshot or whatever.


The result is an h.264 video and aac audio file in a mkv file.

Make sense?

Questions/comments/feedback very welcome!

Cheers,
Al.




After installing the sox package, your stuff worked like a champ.
Looks like that's what I'm going to be using.



Jason
===========


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